1067 × 1600
Source:https://www.britannica.com/topic/flag-of-Romania
609 × 850
Source:https://www.researchgate.net/figure/Red-yellow-blue-mixing-and-the-16-different-colors-that-Hinton-used-in-his-cubes_fig3_331711984
418 × 626
Source:https://www.freepik.com/photos/yellow-red-colors
1160 × 1160
Source:https://encycolorpedia.com/f2ba49
288 × 311
Source:https://www.quora.com/What-are-the-colors-created-by-mixing-yellow-and-red
1306 × 924
Source:https://www.memozor.com/memory-games/printable-memory-games/for-seniors/country-flags-red-yellow-and-green
600 × 600
Source:https://www.pinterest.com/pin/nr-0314--98375573079860389/
2103 × 2111
Source:https://howartworks.com/yes-red-green-yellow/
880 × 1320
Source:https://www.worldatlas.com/flags/spain
850 × 1500
Source:https://www.shutterstock.com/zh/search/blurry-red-yellow-background
